The Seattle Seahawks look to stretch their winning streak to four games and maintain pressure on San Francisco in the NFC when they face the Philadelphia Eagles on Sunday. Kickoff is set for 1 p.m. ET. Philadelphia is a one-point home favorite, and the Over-Under for total points scored is 45.5.

Before you lock in your Eagles vs. Seahawks picks, you NEED to see what SportsLine senior analyst Josh Nagel has to say.

A Nevada-based handicapper with more than 20 years of experience in the sports wagering industry, Nagel has won numerous handicapping contests. In addition, no one knows the Seahawks better. In fact, he is a stunning 15-4 on his last 19 against the spread picks involving Seattle! Anyone who has followed him is WAY UP.

Now he's studied Eagles vs. Seahawks from every possible angle. We can tell you he's leaning Over, and he's also found a critical X-factor that has him jumping all over one side of the spread! You ABSOLUTELY need to see it before you lock in your own picks.

So who wins Eagles vs. Seahawks? And what critical X-factor makes one side of the spread hit HARD? ... Join SportsLine right now to see which side of the Eagles vs. Seahawks spread you should be all over on Sunday, all from the analyst who's 15-4 on Seattle picks!